107 lines
3.4 KiB
C
107 lines
3.4 KiB
C
/*
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* Copyright (c) Pavol Rusnak, SatoshiLabs
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*
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* Licensed under TREZOR License
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* see LICENSE file for details
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*/
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#include "py/runtime.h"
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#if MICROPY_PY_TREZORCONFIG
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#include <stdint.h>
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#include <string.h>
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#include "norcow.h"
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static bool initialized = false;
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/// def init() -> None:
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/// '''
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/// Initializes the storage. Must be called before any other method is called from this module!
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/// '''
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STATIC mp_obj_t mod_trezorconfig_init(void) {
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bool r = norcow_init();
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if (!r) {
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mp_raise_msg(&mp_type_RuntimeError, "Could not initialize config module");
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}
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initialized = true;
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(mod_trezorconfig_init_obj, mod_trezorconfig_init);
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/// def get(app: int, key: int) -> bytes:
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/// '''
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/// Gets a value of given key for given app (or empty bytes if not set).
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/// '''
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STATIC mp_obj_t mod_trezorconfig_get(mp_obj_t app, mp_obj_t key) {
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if (!initialized) {
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mp_raise_msg(&mp_type_RuntimeError, "Config module not initialized");
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}
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uint8_t a = mp_obj_get_int(app);
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uint8_t k = mp_obj_get_int(key);
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uint16_t appkey = a << 8 | k, len;
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const void *val;
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bool r = norcow_get(appkey, &val, &len);
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if (!r || len == 0) {
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return mp_const_empty_bytes;
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}
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vstr_t vstr;
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vstr_init_len(&vstr, len);
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memcpy(vstr.buf, val, len);
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return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorconfig_get_obj, mod_trezorconfig_get);
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/// def set(app: int, key: int, value: bytes) -> None:
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/// '''
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/// Sets a value of given key for given app.
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/// '''
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STATIC mp_obj_t mod_trezorconfig_set(mp_obj_t app, mp_obj_t key, mp_obj_t value) {
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if (!initialized) {
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mp_raise_msg(&mp_type_RuntimeError, "Config module not initialized");
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}
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uint8_t a = mp_obj_get_int(app);
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uint8_t k = mp_obj_get_int(key);
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uint16_t appkey = a << 8 | k;
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mp_buffer_info_t v;
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mp_get_buffer_raise(value, &v, MP_BUFFER_READ);
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bool r = norcow_set(appkey, v.buf, v.len);
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if (!r) {
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mp_raise_msg(&mp_type_RuntimeError, "Could not save value");
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}
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(mod_trezorconfig_set_obj, mod_trezorconfig_set);
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/// def wipe() -> None:
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/// '''
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/// Erases the whole config. Use with caution!
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/// '''
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STATIC mp_obj_t mod_trezorconfig_wipe(void) {
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if (!initialized) {
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mp_raise_msg(&mp_type_RuntimeError, "Config module not initialized");
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}
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bool r = norcow_wipe();
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if (!r) {
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mp_raise_msg(&mp_type_RuntimeError, "Could not wipe storage");
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}
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(mod_trezorconfig_wipe_obj, mod_trezorconfig_wipe);
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STATIC const mp_rom_map_elem_t mp_module_trezorconfig_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_trezorconfig) },
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{ MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&mod_trezorconfig_init_obj) },
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{ MP_ROM_QSTR(MP_QSTR_get), MP_ROM_PTR(&mod_trezorconfig_get_obj) },
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{ MP_ROM_QSTR(MP_QSTR_set), MP_ROM_PTR(&mod_trezorconfig_set_obj) },
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{ MP_ROM_QSTR(MP_QSTR_wipe), MP_ROM_PTR(&mod_trezorconfig_wipe_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(mp_module_trezorconfig_globals, mp_module_trezorconfig_globals_table);
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const mp_obj_module_t mp_module_trezorconfig = {
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.base = { &mp_type_module },
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.globals = (mp_obj_dict_t*)&mp_module_trezorconfig_globals,
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};
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#endif // MICROPY_PY_TREZORCONFIG
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